JP2006317380A - Electric resistance measuring system for tire and its method - Google Patents

Electric resistance measuring system for tire and its method Download PDF

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JP2006317380A
JP2006317380A JP2005142390A JP2005142390A JP2006317380A JP 2006317380 A JP2006317380 A JP 2006317380A JP 2005142390 A JP2005142390 A JP 2005142390A JP 2005142390 A JP2005142390 A JP 2005142390A JP 2006317380 A JP2006317380 A JP 2006317380A
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tire
electrical resistance
probe
resistance value
contact
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Hiroo Murakami
浩生 村上
Tomomichi Uchida
倫道 内田
Takahiro Goto
孝広 後藤
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Bridgestone Corp
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Bridgestone Corp
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Priority to JP2005142390A priority Critical patent/JP2006317380A/en
Priority to EP06731579.6A priority patent/EP1887367B1/en
Priority to PCT/JP2006/307632 priority patent/WO2006123488A1/en
Priority to US11/914,523 priority patent/US7808256B2/en
Priority to ES06731579T priority patent/ES2423433T3/en
Priority to MX2007014309A priority patent/MX2007014309A/en
Priority to CN2006800169314A priority patent/CN101176004B/en
Publication of JP2006317380A publication Critical patent/JP2006317380A/en
Pending legal-status Critical Current

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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60C—VEHICLE TYRES; TYRE INFLATION; TYRE CHANGING; CONNECTING VALVES TO INFLATABLE ELASTIC BODIES IN GENERAL; DEVICES OR ARRANGEMENTS RELATED TO TYRES
    • B60C19/00—Tyre parts or constructions not otherwise provided for
    • B60C19/08—Electric-charge-dissipating arrangements
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N27/00—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means
    • G01N27/02—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means by investigating impedance
    • G01N27/04—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means by investigating impedance by investigating resistance
    • G01N27/041—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means by investigating impedance by investigating resistance of a solid body
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N33/00—Investigating or analysing materials by specific methods not covered by groups G01N1/00 - G01N31/00
    • G01N33/0078—Testing material properties on manufactured objects
    • G01N33/0083—Vehicle parts
    • G01N33/0085—Wheels

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  • Engineering & Computer Science (AREA)
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  • Biochemistry (AREA)
  • General Health & Medical Sciences (AREA)
  • Mechanical Engineering (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Electrochemistry (AREA)
  • Food Science & Technology (AREA)
  • Medicinal Chemistry (AREA)
  • Measurement Of Resistance Or Impedance (AREA)
  • Tires In General (AREA)

Abstract

<P>PROBLEM TO BE SOLVED: To provide a resistance measuring system and its method not requiring much time for resistance measuring work for tires and maintaining measuring accuracy and guaranteeing the conductivity performance of the tire. <P>SOLUTION: In the electric resistance measuring system for tire provided with first and second probes measuring the electric resistance value of the tire, the first probes are contacted to a plurality of locations of the outer periphery surface of tread part and one second probe is contacted to the middle periphery of the tire to measure the electric resistance value between the tread part and the bead part. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

本発明は、トレッドゴムに導電性ゴムを配合したタイヤの電気抵抗を測定するタイヤ用電気抵抗測定装置及びその方法に関する。   The present invention relates to a tire electrical resistance measuring apparatus and method for measuring electrical resistance of a tire in which a conductive rubber is blended with a tread rubber.

従来、タイヤの転がり抵抗を向上させるために、タイヤのゴムにシリカ等の導電性の低い素材を配合している。これによりタイヤの転がり抵抗は向上するが、反面、トレッドゴムの電気抵抗値は高くなり、その結果、車両に発生する静電気が路面に放電されにくくなる問題が生じる。そこで、トレッドゴムに導電性ゴムを配合した一枚のトレッドゴム層を成型ドラムに貼り付けてタイヤを製造する方式が用いられており、その方式では成形前にトレッドゴム層の電気抵抗値の測定を行うために、電気抵抗値の測定精度を上げるためには測定回数を増やす必要から、その測定の作業効率が悪いものであった。   Conventionally, in order to improve the rolling resistance of a tire, a low-conductivity material such as silica is blended in the tire rubber. This improves the rolling resistance of the tire, but on the other hand, the electric resistance value of the tread rubber increases, and as a result, there arises a problem that static electricity generated in the vehicle is hardly discharged to the road surface. Therefore, a method of manufacturing a tire by sticking a tread rubber layer in which conductive rubber is mixed with tread rubber to a molding drum is used. In this method, the electrical resistance value of the tread rubber layer is measured before molding. Therefore, in order to increase the measurement accuracy of the electrical resistance value, it is necessary to increase the number of times of measurement, so that the work efficiency of the measurement is poor.

近年、上記のタイヤの製造方式に代わって、成型ドラムにリボン状のトレッドゴムを積層することでトレッドを形成する方式、即ち、トレッド部の幅方向の中間部及び側面部を除いた部位に低導電性ゴムからなるリボン状のトレッドゴムを積層して、前記中間部及び側面部に高導電性ゴムリボンを積層し、転がり抵抗を悪化させることなく導電性を確保するタイヤが提案されている（特許文献１参照）。   In recent years, instead of the tire manufacturing method described above, a tread is formed by laminating a ribbon-like tread rubber on a molding drum, i.e., the portion of the tread portion in the width direction except the intermediate portion and the side portion is low. A tire has been proposed in which a ribbon-like tread rubber made of conductive rubber is laminated, and a high-conductivity rubber ribbon is laminated on the intermediate part and the side part to ensure conductivity without deteriorating rolling resistance (patent) Reference 1).

しかし、この高導電性ゴムリボンを積層したタイヤは、トレッドゴム層を成型ドラムに貼り付ける従来のタイヤ製造方式と同様な電気抵抗値の測定ができない。何故ならば、測定する対象部位は、従来のタイヤ製造方式が一枚のトレッドゴム層であるのに対して、近年のタイヤ製造方式が細長い高導電性リボンを対象としているために、従来の測定方法では測定部位数が膨大のものとなり作業効率が悪くなり、又、測定精度を上げることが困難である。   However, the tire with the highly conductive rubber ribbon laminated cannot measure the electric resistance as in the conventional tire manufacturing method in which the tread rubber layer is attached to the molding drum. This is because the conventional tire manufacturing method is a single tread rubber layer, whereas the recent tire manufacturing method targets a long and highly conductive ribbon. In this method, the number of measurement parts becomes enormous, the work efficiency is deteriorated, and it is difficult to increase the measurement accuracy.

また、従来の他のタイヤの電気抵抗測定装置として、タイヤのビード部とトレッド部を押しつける一対の第１及び第２のプローブに電気コードを介して電気抵抗想定装置が設置されたものが知られている（特許文献２参照）。この電気抵抗想定装置は、製品タイヤの電気抵抗値を測定するのに、前記一対の第１及び第２のプローブをタイヤに当接して電気抵抗値を測定した後、両プローブをタイヤから離してタイヤを低速で僅かに回転させ、続いて回転を停止させて両プローブを当接させて測定する作業を繰り返し行って測定精度を上げている。しかし、この測定作業は多大な時間がかかる。
特開２００２−９６４０２号公報 特開２０００−９７７１号公報 Another known tire electrical resistance measuring device is a device in which an electrical resistance estimation device is installed via an electrical cord on a pair of first and second probes that press the bead portion and tread portion of the tire. (See Patent Document 2). This electrical resistance assumption device measures the electrical resistance value of a product tire by contacting the pair of first and second probes against the tire and measuring the electrical resistance value, and then separating both probes from the tire. The measurement accuracy is increased by repeating the measurement by rotating the tire slightly at a low speed and then stopping the rotation and bringing both probes into contact with each other. However, this measurement work takes a lot of time.
JP 2002-96402 A Japanese Patent Laid-Open No. 2000-9771

そこで、本発明の課題は、タイヤの抵抗測定作業に多大な時間を要せず、しかも、測定精度を維持してタイヤの導電性の性能を保証する抵抗測定装置及びその方法を提供することである。   Accordingly, an object of the present invention is to provide a resistance measuring device and a method thereof that do not require a great deal of time for the tire resistance measurement work, and that maintain the measurement accuracy and guarantee the conductivity performance of the tire. is there.

上記課題を解決するために、請求項１の発明は、タイヤの電気抵抗値を測定する第１及び第２のプローブを備えるタイヤ用電気抵抗測定装置において、トレッド部の外周面の複数箇所に前記第１のプローブを当接して、タイヤの中央周辺部に１個の前記第２のプローブを当接し、前記トレッド部と前記ビード部間の電気抵抗値を測定することを特徴とする。
請求項２の発明は、請求項１に記載のタイヤ用電気抵抗測定装置において、前記第１及び第２のプローブの当接面がタイヤ外周周面と略同一の形状であることを特徴とする。
請求項３の発明は、請求項２に記載のタイヤ用電気抵抗測定装置において、前記第２のプローブは、ディスクホイールの中央部の位置に当接して、タイヤリムを介して前記トレッド部と前記ビード部間の電気抵抗値を測定することを特徴とする。
請求項４の発明は、請求項１に記載のタイヤ用電気抵抗測定装置において、前記第２のプローブの先端部をビード部に当接して回転する回転手段を備え、前記トレッド部と前記ビード部間の電気抵抗値を測定することを特徴とする。
請求項５の発明は、請求項１に記載のタイヤ用電気抵抗測定装置において、複数の第１のプローブをトレッド部の外周面の複数箇所に当接して、前記第２のプローブの先端部をビード部に当接し、タイヤを支持して回転する回転手段を備え、前記トレッド部と前記ビード部間の電気抵抗値を測定することを特徴とする。
請求項６の発明は、トレッド部の外周面の複数箇所にプローブを当接させる行程と、
タイヤの中央周辺部に１個の第２のプローブを当接させる行程と、タイヤの電気抵抗値を測定する行程とを有することを特徴とする。
請求項７の発明は、請求項６に記載のタイヤ用電気抵抗測定方法において、前記タイヤの電気抵抗値を測定する行程は、ディスクホイールの中央部に１個の第２のプローブを当接させることを特徴とする。
請求項８の発明は、請求項６に記載のタイヤ用電気抵抗測定方法において、前記タイヤの電気抵抗値を測定する行程は、ビード部に１個の第２のプローブを当接させて回転させながら測定することを特徴とする。
請求項９の発明は、請求項６に記載のタイヤ用電気抵抗測定方法において、前記タイヤの電気抵抗値を測定する行程は、ビード部に１個の第２のプローブを当接させてタイヤを回転させながら測定することを特徴とする。 In order to solve the above problems, the invention of claim 1 is directed to a tire electrical resistance measuring device including first and second probes for measuring the electrical resistance value of a tire, and is provided at a plurality of locations on an outer peripheral surface of a tread portion. The first probe is brought into contact, one second probe is brought into contact with the center peripheral portion of the tire, and the electrical resistance value between the tread portion and the bead portion is measured.
According to a second aspect of the present invention, in the tire electrical resistance measuring apparatus according to the first aspect, the contact surfaces of the first and second probes have substantially the same shape as the outer circumferential surface of the tire. .
According to a third aspect of the present invention, in the tire electrical resistance measuring device according to the second aspect, the second probe is in contact with a position of a central portion of the disc wheel, and the tread portion and the bead are interposed via a tire rim. The electrical resistance value between the parts is measured.
According to a fourth aspect of the present invention, in the electrical resistance measuring device for a tire according to the first aspect, the tread portion and the bead portion are provided with rotating means for rotating the tip portion of the second probe in contact with the bead portion. It measures the electrical resistance value between.
According to a fifth aspect of the present invention, in the tire electrical resistance measurement device according to the first aspect, the plurality of first probes are brought into contact with a plurality of locations on the outer peripheral surface of the tread portion, and the tip end portion of the second probe is disposed. Rotating means that contacts the bead part and rotates while supporting the tire is provided, and an electrical resistance value between the tread part and the bead part is measured.
The invention of claim 6 is a step of bringing the probe into contact with a plurality of locations on the outer peripheral surface of the tread portion;
The method includes a step of bringing one second probe into contact with a central peripheral portion of the tire and a step of measuring an electric resistance value of the tire.
According to a seventh aspect of the present invention, in the method for measuring electrical resistance for a tire according to the sixth aspect, in the step of measuring the electrical resistance value of the tire, one second probe is brought into contact with the central portion of the disc wheel. It is characterized by that.
According to an eighth aspect of the present invention, in the method of measuring electrical resistance for tires according to the sixth aspect, the process of measuring the electrical resistance value of the tire is performed by rotating one bead portion in contact with the second probe. It measures while measuring.
According to a ninth aspect of the present invention, in the method for measuring electrical resistance for a tire according to the sixth aspect, in the step of measuring the electrical resistance value of the tire, the tire is brought into contact with one second probe in the bead portion. It is characterized by measuring while rotating.

トレッド部とビード部間の電気抵抗値を自動的に測定でき、しかも、測定精度が維持できる。タイヤの導電性性能を保証することができ、測定作業を大幅に簡略化ができる。   The electric resistance value between the tread portion and the bead portion can be automatically measured, and the measurement accuracy can be maintained. The conductive performance of the tire can be guaranteed, and the measurement work can be greatly simplified.

図１に従って第１の実施形態の全体構成を示す概念図について説明する。図１の符号１０はタイヤ用電気抵抗測定装置であり、抵抗測定器１、４個の第１のプローブ２、第２のプローブ３及び電気コード４から構成されている。前記第１及び第２のプローブ２、３には電気コード４が接続され、その他端部は抵抗測定器１に接続されている。前記第１及び第２のプローブ２、３の材質としては、抵抗率が小さく、且つ、硬さが小さい材料を用いるのが望ましい。なお、符号５はタイヤ、符号６はトレッド部、符号７はリム部、符号８はディスクホイール、符号９はビード部である。   A conceptual diagram showing the overall configuration of the first embodiment will be described with reference to FIG. Reference numeral 10 in FIG. 1 denotes a tire electrical resistance measuring device, which includes a resistance measuring instrument 1, four first probes 2, a second probe 3, and an electrical cord 4. An electric cord 4 is connected to the first and second probes 2 and 3, and the other end is connected to the resistance measuring instrument 1. As the material of the first and second probes 2 and 3, it is desirable to use a material having a low resistivity and a low hardness. Reference numeral 5 denotes a tire, reference numeral 6 denotes a tread portion, reference numeral 7 denotes a rim portion, reference numeral 8 denotes a disc wheel, and reference numeral 9 denotes a bead portion.

第１のプローブ２の当接面は、タイヤのトレッド部６外周面と略同一に設定されている。トレッド部の幅方向に対して中間部だけに高導電性ゴムリボンが備えられているタイヤに対しては、第１のプローブ２はトレッド部６の幅方向に対して中間部に当接し、トレッド部６の幅方向に対して側面部に高導電性ゴムリボンが備えられているタイヤに対しては、第１のプローブ２はトレッド部６の全幅に当接する。なお、以下に説明する実施形態では、中間部だけに高導電性ゴムリボンが備えられているタイヤに対して、第１のプローブ２がトレッド部６の中間部に当接されているものとして説明する。   The contact surface of the first probe 2 is set substantially the same as the outer peripheral surface of the tread portion 6 of the tire. For tires having a highly conductive rubber ribbon only in the middle with respect to the width direction of the tread portion, the first probe 2 contacts the middle portion with respect to the width direction of the tread portion 6, and the tread portion The first probe 2 abuts against the entire width of the tread portion 6 for a tire having a highly conductive rubber ribbon on the side surface with respect to the width direction 6. In the embodiment described below, a description will be given assuming that the first probe 2 is in contact with the intermediate portion of the tread portion 6 with respect to a tire provided with a highly conductive rubber ribbon only in the intermediate portion. .

第２のプローブ３は、例えば、円柱状の先端部を有する形状のもので、その先端部の頭部は測定対象の当接面と略同一の形状とすることが好ましい。第１及び第２のプローブ２の当接面をこのように設定する理由は、トレッド部６の接触面積を大きくすることで接触抵抗が著しく小さくして、電気抵抗値の測定精度を高くするためである。   The second probe 3 has, for example, a shape having a cylindrical tip, and the head of the tip is preferably substantially the same as the contact surface to be measured. The reason why the contact surfaces of the first and second probes 2 are set in this way is that the contact resistance of the tread portion 6 is increased to significantly reduce the contact resistance and increase the measurement accuracy of the electrical resistance value. It is.

タイヤ５の電気抵抗値を測定する際には、トレッド部６の外周を略均等配分する４カ所の位置で、好ましくは、均等配分する４カ所の位置で、幅方向に対して中間部に４個の第１のプローブ２を当接すると共に、第２のプローブ３をディスクホイール８の中央部の位置に当接して電気抵抗測定器１の電源を投入する。ディスクホイール８を介してしてトレッド部６とビード部８間の電気抵抗値を測定タイヤ５の電気抵抗値の測定を行う。   When the electrical resistance value of the tire 5 is measured, it is 4 in the middle portion with respect to the width direction at four positions where the outer periphery of the tread portion 6 is substantially evenly distributed, preferably at four positions where the outer periphery is evenly distributed. The first probes 2 are brought into contact with each other, and the second probe 3 is brought into contact with the central portion of the disc wheel 8 to turn on the electric resistance measuring instrument 1. The electrical resistance value between the tread portion 6 and the bead portion 8 is measured via the disc wheel 8 to measure the electrical resistance value of the tire 5.

このような位置に第１及び第２のプローブ２、３を当接することにより、第２のプローブ３に対して４個の第１のプローブ２がほぼ等しい距離で４箇所の電気抵抗値を測定できるため、車両が路面を走行したときに該車両のタイヤに発生する静電気の放電量が適切に測定できる。   By bringing the first and second probes 2 and 3 into contact with each other at this position, the four first probes 2 are measured with respect to the second probe 3 at approximately equal distances and measured at four locations. Therefore, when the vehicle travels on the road surface, the amount of static electricity generated in the tire of the vehicle can be appropriately measured.

従来行われているトレッドゴムの電気抵抗値の測定では、一対の第１及び第２のプローブ２、３間に存在している高導電性ゴムリボンの電気抵抗を測定するだけであるので、既述したようにタイヤ５を低速で回転させて複数の箇所を測定する必要があるが、本実施形態では、同時に４箇所の測定が行えるからその分迅速に測定作業を行うことができる。   In the conventional measurement of the electrical resistance value of the tread rubber, only the electrical resistance of the highly conductive rubber ribbon existing between the pair of first and second probes 2 and 3 is measured. As described above, it is necessary to rotate the tire 5 at a low speed and measure a plurality of locations. In this embodiment, four locations can be measured at the same time, so that the measurement operation can be performed more quickly.

なお、上記第１の実施形態は、４個の第１のプローブ２を備えるものとして説明したが、この数に限定されるものではなく第１のプローブ２の数が多いほど測定精度が向上する。   Although the first embodiment has been described as including four first probes 2, the number of first probes 2 is not limited to this number, and the measurement accuracy improves. .

タイヤ５の電気抵抗値を測定する手順を、図２に示すフローチャートに従って説明する。タイヤ５の電気抵抗値の測定は、タイヤの抵抗測定システムを用いて自動化されている。従って、以下に説明するタイヤ５の電気抵抗値の測定手順は、タイヤの抵抗測定システムによる測定作業についてのものであり、該タイヤの抵抗測定システム自体は従来からよく知られているものなので説明は省略する。   The procedure for measuring the electrical resistance value of the tire 5 will be described according to the flowchart shown in FIG. The measurement of the electrical resistance value of the tire 5 is automated using a tire resistance measurement system. Therefore, the measurement procedure of the electrical resistance value of the tire 5 described below is for measurement work by the tire resistance measurement system, and since the tire resistance measurement system itself is well known in the art, the explanation is as follows. Omitted.

タイヤ５はベルトコンベヤーに代表される搬送手段で運ばれてきて（Ｓ１）、例えば、ロボットアームで掴んで（Ｓ２）電気抵抗値の測定用チャッキング装置に移動する。該チャッキング装置の上及び下のチャッキングリングでタイヤ５を把持する（Ｓ３）。把持されたタイヤ５にタイヤリム７を組み込み（Ｓ４）、バルブを介してタイヤ５に圧縮空気を注入する（Ｓ５）。   The tire 5 is carried by a conveying means typified by a belt conveyor (S1), and, for example, is gripped by a robot arm (S2) and moved to a chucking device for measuring an electric resistance value. The tire 5 is gripped by the upper and lower chucking rings of the chucking device (S3). A tire rim 7 is incorporated into the gripped tire 5 (S4), and compressed air is injected into the tire 5 through a valve (S5).

タイヤ５のトレッド外周面を４等分したタイヤ５幅の中央部の位置に例えば、一般的な把持手段に装備させた４個の第１のプローブ２を当接させ、また、ディスクホイール８の外周面の中央部に同様に把持手段に装備させた第２のプローブ２を当接させる（Ｓ６）。抵抗測定器１の電源を投入してタイヤ５の電気抵抗値を測定する（Ｓ７）。測定の終了後にはタイヤバルブを介してタイヤ５の空気を排除して（Ｓ８）、チャッキング装置から測定タイヤ５を外して（Ｓ９）搬送手段に移送する。   For example, four first probes 2 mounted on a general gripping means are brought into contact with the central portion of the width of the tire 5 obtained by dividing the tread outer peripheral surface of the tire 5 into four equal parts. Similarly, the second probe 2 mounted on the gripping means is brought into contact with the central portion of the outer peripheral surface (S6). The power source of the resistance measuring instrument 1 is turned on and the electrical resistance value of the tire 5 is measured (S7). After completion of the measurement, the air in the tire 5 is removed through the tire valve (S8), and the measurement tire 5 is removed from the chucking device (S9) and transferred to the conveying means.

図３に従って本発明の第２の実施形態の全体構成を示す概念図を説明する。第２の実施形態は、一般的な回転手段に装備された第２のプローブがビード部に当接した状態で回転する点で前記第１の実施形態と相違し、その他の構成は同じである。   A conceptual diagram showing the overall configuration of the second embodiment of the present invention will be described with reference to FIG. The second embodiment is different from the first embodiment in that a second probe mounted on a general rotating means rotates in a state of being in contact with a bead portion, and other configurations are the same. .

第２の実施形態のタイヤ５の電気抵抗値を測定する手順は、第１の実施形態で示したＳ６及びＳ７の作業手順が相違しているだけで、他の作業手順は同じであるのでその作業手順の説明を省略する。タイヤ５のトレッド外周面を４等分したタイヤ５幅の中央に４個の第１のプローブ２を当接させ、また、ビード部９の側壁面に回転手段に装備させた第２のプローブ２を当接させて（Ｓ６）、抵抗測定器１の電源の投入と同時に第２のプローブ２を１回転させながら、トレッド部６とビード部９間の電気抵抗値を測定する（Ｓ７）。   The procedure for measuring the electrical resistance value of the tire 5 of the second embodiment is that the work procedures of S6 and S7 shown in the first embodiment are different and the other work procedures are the same. Description of the work procedure is omitted. Four first probes 2 are brought into contact with the center of the width of the tire 5 obtained by dividing the tread outer circumferential surface of the tire 5 into four equal parts, and the second probe 2 is provided on the side wall surface of the bead portion 9 as a rotating means. (S6), the electrical resistance value between the tread portion 6 and the bead portion 9 is measured while the second probe 2 is rotated once at the same time when the resistance measuring instrument 1 is turned on (S7).

図４に従って本発明の第３の実施形態の全体構成を示す概念図を説明する。第３の実施形態は、第１及び第２の実施形態と同様の第２のプローブ３を用いていており、そして、第１のプローブの形状は例えば円柱形状であり、一般的な把持手段に装備させた４個の第１のプローブ２をトレッド部６の外周を複数に略均等配分する位置で、幅方向に平行な位置に当接した状態で、測定対象タイヤ５を１回転させる点で前記第２の実施形態の構成と相違している。   A conceptual diagram showing the overall configuration of the third embodiment of the present invention will be described with reference to FIG. The third embodiment uses a second probe 3 similar to that of the first and second embodiments, and the shape of the first probe is, for example, a cylindrical shape. The measurement target tire 5 is rotated once in a state in which the four first probes 2 that are equipped are in contact with a position parallel to the width direction at a position where the outer periphery of the tread portion 6 is substantially evenly distributed. This is different from the configuration of the second embodiment.

第３の実施形態のタイヤ５の電気抵抗値を測定する手順は、第１の実施形態で示したＳ６及びＳ７の作業手順が相違しているだけで、他の作業手順は同じであるのでその作業手順の説明を省略する。タイヤ５のトレッド部６外周面を４等分したタイヤ５幅の中央部に４個の円柱形状第１のプローブ２を当接させ、また、ビード部９の側壁面に一般的な把持手段に装備させた第２のプローブ２を当接させて（Ｓ６）、抵抗測定器１の電源の投入と同時に測定対象タイヤ５を一般的な回転手段で１回転させながら、トレッド部６とビード部９間の電気抵抗値を測定する（Ｓ７）。なお、第１のプローブ２が円柱形状であるのは、タイヤが回転するときの摩擦抵抗を少なくするためである。   The procedure for measuring the electrical resistance value of the tire 5 of the third embodiment is that the work procedures of S6 and S7 shown in the first embodiment are different and the other work procedures are the same. Description of the work procedure is omitted. Four cylindrical first probes 2 are brought into contact with the center of the width of the tire 5 obtained by dividing the outer peripheral surface of the tread portion 6 of the tire 5 into four equal parts, and the side wall surface of the bead portion 9 is used as a general gripping means. The tread portion 6 and the bead portion 9 are brought into contact with the equipped second probe 2 (S6), and the measurement target tire 5 is rotated once by a general rotating means at the same time when the resistance measuring instrument 1 is turned on. The electrical resistance value is measured (S7). The reason why the first probe 2 is cylindrical is to reduce the frictional resistance when the tire rotates.

第２及び第３の実施形態は、第２のプローブ３が回転するかタイヤ５が回転するかの違いはあるが、トレッド部６とビード部９間の電気抵抗値を測定する方式は同じである。それは、抵抗測定器１に電源が投入されると回転する時間と共に、１回転の間にタイヤの全周に渡ったトレッド部６とビード部９間の電気抵抗値が積分されていく。   The second and third embodiments differ in whether the second probe 3 rotates or the tire 5 rotates, but the method of measuring the electrical resistance value between the tread portion 6 and the bead portion 9 is the same. is there. That is, the electric resistance value between the tread portion 6 and the bead portion 9 is integrated over the entire circumference of the tire during one rotation along with the rotation time when power is supplied to the resistance measuring instrument 1.

又、第１の実施形態と第２及び第３の実施形態の第２のプローブ３を当接する対象となる部材が、ディスクホイール８とビード部９で異なるが、トレッド部６とビード部９間の電気抵抗値を測定する目的は同じである。従って、第２のプローブ３を当接する対象となる部材はリム部７、ディスクホイール８及びビード部９の何れの部材に当接してもよい。そこで、これらの部材に第２のプローブ３を当接してもよい場所を「中央周辺部」と称する。   Further, the members to be contacted with the first probe and the second probe 3 of the second and third embodiments are different between the disc wheel 8 and the bead portion 9, but between the tread portion 6 and the bead portion 9. The purpose of measuring the electrical resistance value is the same. Therefore, the member to be contacted with the second probe 3 may contact any member of the rim portion 7, the disc wheel 8, and the bead portion 9. Therefore, a place where the second probe 3 may come into contact with these members is referred to as a “central peripheral portion”.

上記した第１乃至第３の実施形態は、タイヤの電気抵抗を測定する対象として製品タイヤの説明を行ったが、生タイヤでも測定可能である。ただし、生タイヤの測定の場合は、第２及び第３の実施形態のタイヤ用電気抵抗測定装置が用いられ、又、図２で示したフローチャートのＳ４、Ｓ５及びＳ８を除いた手順が、タイヤの電気抵抗を測定する方法として用いられる。   In the first to third embodiments described above, the product tire has been described as an object for measuring the electrical resistance of the tire, but it can also be measured with a raw tire. However, in the case of measurement of raw tires, the tire electrical resistance measurement devices of the second and third embodiments are used, and the procedure excluding S4, S5 and S8 in the flowchart shown in FIG. It is used as a method for measuring the electrical resistance of

以上のように、第１の実施形態のタイヤ用電気抵抗測定装置１０は、瞬時にトレッド部６とビード部９間の電気抵抗値を自動的に測定でき、しかも、測定精度が維持できる。タイヤの導電性性能を保証することができ、測定作業を大幅に簡略化できる。そして、第２及び第３の実施形態のタイヤ用電気抵抗測定装置１０は、タイヤの全周に渡ってトレッド部６とビード部９間の電気抵抗値を自動的に測定でき、測定精度の高い測定結果が得られる。換言すれば、該タイヤ用電気抵抗測定装置１０は、タイヤの全周に渡って電気抵抗値を測定しているので、車両が路面を走行したときに該車両のタイヤに発生する静電気の放電量が適切に測定できる。更に、測定作業の大幅な簡略化ができる。   As described above, the tire electrical resistance measurement device 10 according to the first embodiment can automatically measure the electrical resistance value between the tread portion 6 and the bead portion 9 instantaneously, and can maintain the measurement accuracy. The conductive performance of the tire can be guaranteed, and the measurement work can be greatly simplified. And the electrical resistance measuring apparatus 10 for tires of 2nd and 3rd embodiment can measure automatically the electrical resistance value between the tread part 6 and the bead part 9 over the perimeter of a tire, and its measurement precision is high. A measurement result is obtained. In other words, since the tire electrical resistance measuring device 10 measures the electrical resistance value over the entire circumference of the tire, the amount of static electricity generated in the tire of the vehicle when the vehicle travels on the road surface. Can be measured appropriately. Furthermore, the measurement work can be greatly simplified.

本発明の第１の実施形態の全体構成を示す概念図である。It is a conceptual diagram which shows the whole structure of the 1st Embodiment of this invention. 測定用タイヤの搬入、タイヤの電気抵抗値の測定、そして、測定されたタイヤの解放までのタイヤの電気抵抗値を測定するフローチャートである。It is a flowchart which measures the electrical resistance value of the tire until carrying in of the tire for a measurement, measurement of the electrical resistance value of a tire, and the measurement of the measured tire release. 本発明の第２の実施形態の全体構成を示す概念図である。It is a conceptual diagram which shows the whole structure of the 2nd Embodiment of this invention. 本発明の第３の実施形態の全体構成を示す概念図である。It is a conceptual diagram which shows the whole structure of the 3rd Embodiment of this invention.

符号の説明Explanation of symbols

１・・・抵抗測定器、２・・・第１のプローブ、３・・・第２のプローブ、４・・・電気コード、５・・・タイヤ、６・・・トレッド部、７・・・リム部、８・・・ディスクホイール、９・・・ビード部、１０・・・タイヤ用電気抵抗測定装置。 DESCRIPTION OF SYMBOLS 1 ... Resistance measuring device, 2 ... 1st probe, 3 ... 2nd probe, 4 ... Electric cord, 5 ... Tire, 6 ... Tread part, 7 ... Rim part, 8... Disc wheel, 9... Bead part, 10.

Claims (9)

タイヤの電気抵抗値を測定する第１及び第２のプローブを備えるタイヤ用電気抵抗測定装置において、
トレッド部の外周面の複数箇所に前記第１のプローブを当接して、タイヤの中央周辺部に１個の前記第２のプローブを当接し、前記トレッド部と前記ビード部間の電気抵抗値を測定することを特徴とするタイヤ用電気抵抗測定装置。 In a tire electrical resistance measuring device including first and second probes for measuring an electrical resistance value of a tire,
The first probe is brought into contact with a plurality of locations on the outer peripheral surface of the tread portion, one second probe is brought into contact with the central peripheral portion of the tire, and the electric resistance value between the tread portion and the bead portion is determined. An electrical resistance measuring device for tires, characterized by measuring. 請求項１に記載のタイヤ用電気抵抗測定装置において、
前記第１のプローブの当接面がタイヤ外周面と略同一の形状であることを特徴とするタイヤ用電気抵抗測定装置。 In the tire electrical resistance measuring device according to claim 1,
The tire electrical resistance measuring device, wherein the contact surface of the first probe has substantially the same shape as the tire outer peripheral surface. 請求項２に記載のタイヤ用電気抵抗測定装置において、
前記第２のプローブは、ディスクホイールの中央部の位置に当接して、タイヤリムを介して前記トレッド部と前記ビード部間の電気抵抗値を測定することを特徴とするタイヤ用電気抵抗測定装置。 In the tire electrical resistance measuring device according to claim 2,
The second probe is in contact with the position of the center portion of the disc wheel, and measures the electric resistance value between the tread portion and the bead portion via a tire rim, and the tire electric resistance measuring device. 請求項１に記載のタイヤ用電気抵抗測定装置において、
前記第２のプローブの先端部をビード部に当接して回転させる回転手段を備え、前記トレッド部と前記ビード部間の電気抵抗値を測定することを特徴とするタイヤ用電気抵抗測定装置。 In the tire electrical resistance measuring device according to claim 1,
A tire electrical resistance measuring device comprising: a rotating means for rotating the tip portion of the second probe in contact with the bead portion; and measuring an electrical resistance value between the tread portion and the bead portion. 請求項１に記載のタイヤ用電気抵抗測定装置において、
複数の第１のプローブをトレッド部の外周面の複数箇所に当接して、前記第２のプローブの先端部をビード部に当接し、タイヤを支持して回転させる回転手段を備え、前記トレッド部と前記ビード部間の電気抵抗値を測定することを特徴とするタイヤ用電気抵抗測定装置。 In the tire electrical resistance measuring device according to claim 1,
Rotating means for contacting a plurality of first probes with a plurality of locations on the outer peripheral surface of the tread portion, abutting a tip portion of the second probe with a bead portion, and supporting and rotating a tire, the tread portion And an electrical resistance measurement device for tires that measures an electrical resistance value between the bead portion and the bead portion. トレッド部の外周面の複数箇所にプローブを当接させる行程と、
タイヤの中央周辺部に１個の第２のプローブを当接させる行程と、
タイヤの電気抵抗値を測定する行程と
を有することを特徴とするタイヤ用電気抵抗測定方法。 A step of bringing the probe into contact with a plurality of locations on the outer peripheral surface of the tread portion;
A step of bringing one second probe into contact with the center periphery of the tire;
And a step of measuring the electrical resistance value of the tire. 請求項６に記載のタイヤ用電気抵抗測定方法において、
前記タイヤの電気抵抗値を測定する行程は、ディスクホイールの中央部に１個の第２のプローブを当接させることを特徴とするタイヤ用電気抵抗測定方法。 In the tire electrical resistance measuring method according to claim 6,
The step of measuring the electrical resistance value of the tire comprises bringing one second probe into contact with the center portion of the disk wheel. 請求項６に記載のタイヤ用電気抵抗測定方法において、
前記タイヤの電気抵抗値を測定する行程は、ビード部に１個の第２のプローブを当接させて回転させながら測定することを特徴とするタイヤ用電気抵抗測定方法。 In the tire electrical resistance measuring method according to claim 6,
The step of measuring the electrical resistance value of the tire is measured by rotating a tire while bringing one second probe into contact with the bead portion and rotating it. 請求項６に記載のタイヤ用電気抵抗測定方法において、
前記タイヤの電気抵抗値を測定する行程は、ビード部に１個の第２のプローブを当接させてタイヤを回転させながら測定することを特徴とするタイヤ用電気抵抗測定方法。 In the tire electrical resistance measuring method according to claim 6,
The step of measuring the electrical resistance value of the tire is measured while rotating the tire by bringing one second probe into contact with the bead portion.
JP2005142390A 2005-05-16 2005-05-16 Electric resistance measuring system for tire and its method Pending JP2006317380A (en)

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EP06731579.6A EP1887367B1 (en) 2005-05-16 2006-04-11 Electric resistance measuring device and method for tire
PCT/JP2006/307632 WO2006123488A1 (en) 2005-05-16 2006-04-11 Electric resistance measuring device and method for tire
US11/914,523 US7808256B2 (en) 2005-05-16 2006-04-11 Electrical resistance measuring device for tires, and method thereof
ES06731579T ES2423433T3 (en) 2005-05-16 2006-04-11 Electrical resistance measuring device and method for a tire
MX2007014309A MX2007014309A (en) 2005-05-16 2006-04-11 Electric resistance measuring device and method for tire.
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CN101176004A (en) 2008-05-07
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EP1887367B1 (en) 2013-05-22
US20090072842A1 (en) 2009-03-19
CN101176004B (en) 2011-04-13
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EP1887367A1 (en) 2008-02-13
US7808256B2 (en) 2010-10-05

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